System, method and apparatus for wall support of ceiling suspension grid

Abstract

A ceiling suspension system is disclosed and includes a plurality of grid members configured to form a grid for the ceiling suspension system, each grid member comprising a bulb, a web and a flange. The system also includes a plurality of wall support brackets configured to mount the grid to walls in a structure. Each wall support bracket comprises a vertical back, a lower flange at a lower end of the vertical back, and an upper flange at an upper end of the vertical back. Further, the upper flange is generally V-shaped when viewed longitudinally and each wall support bracket only one tab in the lower flange for each grid member. Moreover, the only one tab is configured to engage and retain the flange of a respective grid member, such that the respective grid member rests on the lower flange.

What is claimed is: 
     
       1. A ceiling suspension system, comprising:
 a plurality of grid members configured to form a grid for the ceiling suspension system, each grid member comprising a bulb, a web and a flange; and 
 a plurality of wall support brackets configured to mount the grid to walls in a structure, each wall support bracket comprises a vertical back, a lower flange at a lower end of the vertical back, and an upper flange at an upper end of the vertical back, wherein the upper flange is generally V-shaped when viewed longitudinally and each wall support bracket comprises:
 only one tab in the lower flange for each grid member, wherein the only one tab is configured to engage and retain the flange of a respective grid member, such that the respective grid member rests on the lower flange, and the lower flange has no other features for positive engagement with and retention of the flange of the respective grid member; and 
 only one hole formed in the upper flange for each grid member, wherein the only one hole has a minimum height above the lower flange measured from an upper surface of the lower flange to a bottom of the hole and a maximum height above the lower flange measured from the upper surface of the lower flange to a top of the hole. 
 
 
     
     
       2. The ceiling suspension system of  claim 1 , wherein the bulb of each grid member is configured to be located adjacent a respective only one hole in the upper flange. 
     
     
       3. The ceiling suspension system of  claim 2 , wherein the bulbs of the grid members are configured to seat in holes in the upper flange. 
     
     
       4. The ceiling suspension system of  claim 1 , wherein the minimum height is less than a height of the grid member. 
     
     
       5. The ceiling suspension system of  claim 1 , wherein the maximum height is less than a height of the grid members. 
     
     
       6. The ceiling suspension system of  claim 1 , wherein both the minimum and the maximum heights are less than a height of the grid members. 
     
     
       7. A ceiling suspension system, comprising:
 a plurality of grid members configured to form a grid for the ceiling suspension system, each grid member comprising a bulb, a web and a flange; and 
 a plurality of wall support brackets configured to mount the grid to walls in a structure, each wall support bracket comprises a vertical back, a lower flange at a lower end of the vertical back, and an upper flange at an upper end of the vertical back, wherein the upper flange is generally V-shaped when viewed longitudinally and each wall support bracket comprises: 
 only one tab in the lower flange for each grid member; and 
 only one hole formed in the upper flange for each grid member, wherein the only one hole has a minimum height above the lower flange measured from an upper surface of the lower flange to a bottom of the hole and a maximum height above the lower flange measured from the upper surface of the lower flange to a top of the hole. 
 
     
     
       8. The ceiling suspension system of  claim 7 , wherein the only one tab is configured to engage and retain the flange of a respective grid member, such that the respective grid member rests on the lower flange, and the lower flange has no other features for positive engagement with and retention of the flange of the respective grid member. 
     
     
       9. The ceiling suspension system of  claim 7 , wherein the only one tab for each grid member comprises a locking feature for engaging and retaining the flange of the respective grid member in the tab. 
     
     
       10. The ceiling suspension system of  claim 9 , wherein the locking feature is a finger that extends downward from the tab. 
     
     
       11. The ceiling suspension system of  claim 7 , wherein the only one tab for each grid member comprises a reinforcement rib for stiffness. 
     
     
       12. The ceiling suspension system of  claim 11 , wherein the reinforcement rib has a rib height that is greater than a height of the only one tab. 
     
     
       13. The ceiling suspension system of  claim 7 , wherein the only one tab for each grid member comprises a pair of parallel, substantially cylindrical reinforcement ribs that extend from the only one tab toward the lower flange. 
     
     
       14. The ceiling suspension system of  claim 7 , wherein the vertical back and the lower flange are substantially perpendicular to each other. 
     
     
       15. A ceiling suspension system, comprising:
 a plurality of grid members configured to form a grid for the ceiling suspension system, each grid member comprising a bulb, a web and a flange; and 
 a plurality of wall support brackets configured to mount the grid to walls in a structure, each wall support bracket comprises a vertical back, a lower flange at a lower end of the vertical back, and an upper flange at an upper end of the vertical back, wherein the upper flange is generally V-shaped when viewed longitudinally and each wall support bracket comprises:
 a tab in the lower flange for each grid member, wherein the tab is configured to engage and retain the flange of a respective grid member; and 
 a hole formed in the upper flange for each grid member, wherein the hole has a minimum height above the lower flange measured from an upper surface of the lower flange to a bottom of the hole and a maximum height above the lower flange measured from the upper surface of the lower flange to a top of the hole. 
 
 
     
     
       16. The ceiling suspension system of  claim 15 , wherein the respective grid member rests on the lower flange and the lower flange has no other features for positive engagement with and retention of the flange of the respective grid member. 
     
     
       17. The ceiling suspension system of  claim 15 , wherein a height of a lower apex of the upper flange above the lower flange is less than a height of the grid members. 
     
     
       18. The ceiling suspension system of  claim 15 , wherein a height of the vertical back is greater than a height of the grid members. 
     
     
       19. The ceiling suspension system of  claim 15 , wherein the V-shaped upper flange comprises an apex that is radiused or at least partially flat. 
     
     
       20. The ceiling suspension system of  claim 15 , wherein the hole is configured to engage and prevent rotation and torsion of a respective one of the grid members.